find the surface area of a triangular prism in swift

main.swift
func surfaceAreaOfTriangularPrism(base: Double, height: Double, length: Double) -> Double {
    let baseArea = base * height //area of the base (triangle)
    let sideArea = 3 * height * length //area of the three rectangular sides
    return baseArea + sideArea //total surface area
}
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main.swift
let surfaceArea = surfaceAreaOfTriangularPrism(base: 5.0, height: 7.0, length: 10.0)
print("The surface area of the triangular prism is: \(surfaceArea)")
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main.swift
The surface area of the triangular prism is: 185.0
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